Introduces children to different types of mammals, describing what characteristics mammals have, where they live, what they have in common, and how they differ from other animals. Part of the "Amazing Science: Animal Classification" series. Interest Level: K-3 Reading Level: 2.7 ATOS Book Level: 4.4 AR Interest Level: LG AR Points: .5 AR Quiz: 131534EN Lexile Measure: 710 Lexile Code: IG (Illustrated Guide) Guided Reading Level: N Fountas & Pinnell: M.